LOCATION TRUBLE ID
Established Series
Rev. KA/RGK/CBR
05/2018
TRUBLE SERIES
Landscape--hills
Landform--fan remnants
Slope--1 to 8 percent
Parent material--loess-influenced alluvium over rhyolite
Mean annual precipitation--about 300 mm
Mean annual air temperature--about 4.4 degrees C
Depth class--moderately deep
Drainage class--well drained
Soil moisture regime--xeric
Soil temperature regime--frigid
TAXONOMIC CLASS: Loamy-skeletal over fragmental, mixed, superactive, frigid Calcic Argixerolls
TYPICAL PEDON: Truble channery silt loam in an area of rangeland (Colors are for dry soil unless otherwise noted.)
A--0 to 8 cm; dark grayish brown (10YR 4/2) channery silt loam, very dark brown (10YR 2/2) moist; moderate medium and coarse granular structure; soft, very friable, slightly sticky and slightly plastic; many very fine and common fine and medium roots; common very fine tubular pores; 20 percent channers; slightly alkaline (pH 7.4); clear wavy boundary
Bt--8 to 18 cm; brown (10YR 4/3) loam, very dark grayish brown (10YR 3/2) moist; moderate medium and fine subangular blocky structure; slightly hard, friable, slightly sticky and moderately plastic; many very fine and common fine, medium, and coarse roots; common very fine tubular pores; few thin clay films on ped faces; 10 percent channers; neutral (pH 7.2); clear wavy boundary
Btk--18 to 23 cm; brown (10YR 5/3) channery loam, dark brown (10YR 3/3) moist; moderate medium subangular blocky structure; slightly hard, friable, slightly sticky and moderately plastic; common fine and very fine roots; common fine and very fine tubular pores; common thin clay films on ped faces and in pores; 25 percent channers; strongly effervescent (5 percent calcium carbonate equivalent); slightly alkaline (pH 7.8); abrupt wavy boundary
Bk1--23 to 53 cm; light gray (10YR 7/2) very channery loam, light yellowish brown (10YR 6/4) moist; moderate medium subangular blocky structure; soft, friable, slightly sticky and slightly plastic; few very fine roots; few very fine tubular pores; 45 percent channers and 5 percent flagstones; calcium carbonate coatings on bottom of rock fragments; violently effervescent (35 percent calcium carbonate); moderately alkaline (pH 8.2); abrupt wavy boundary
2Bk2--53 to 71 cm; light gray (10YR 7/2) extremely flaggy sandy loam, light yellowish brown (10YR 6/4) moist; weak medium subangular blocky structure; soft, very friable, nonsticky and nonplastic; few very fine roots; common medium interstices larger than 1 mm partially filled with fines; 10 percent channers and 70 percent flagstones; calcium carbonate coatings on bottom of rock fragments; violently effervescent (25 percent calcium carbonate); moderately alkaline (pH 8.2); abrupt wavy boundary
2Bk3--71 to 91 cm; flagstones; few very fine roots; many coarse interstices larger than 1 mm not filled with fines; 15 percent channers and 80 percent flagstones; calcium carbonate coatings on bottom of rock fragments; violently effervescent (20 percent calcium carbonate); strongly alkaline (pH 8.6); abrupt wavy boundary
3R--91 cm; rhyolite; calcium carbonate coatings
TYPE LOCATION: Clark County, Idaho; latitude 44.24746 degrees north, longitude 112.49059 degrees west, datum WGS 84
RANGE IN CHARACTERISTICS:
Mean annual soil temperature--3.3 to 7.2 degrees C
Depth to bedrock--50 to 100 cm
Thickness of mollic epipedon--20 to 25 cm
Depth to argillic horizon--5 to 10 cm
Depth to secondary calcium carbonates--15 to 30 cm
Depth to lithologic discontinuity--50 to 85 cm
Particle-size control section (weighted averages)
Upper part (includes argillic horizon)--5 to 27 percent clay; 35 to 85 percent total rock fragments
Lower part--90 to 100 percent total rock fragments
A horizon
Value--3 to 5 dry, 2 or 3 moist
Chroma--2 or 3 dry or moist
Clay content--5 to 10 percent
Channer content--15 to 30 percent
Reaction--pH 6.8 to 7.6
Thickness--5 to 10 cm
Bt horizon, and Btk horizon (where present)
Value--4 or 5 dry, 2 or 3 moist
Chroma--2 or 3 dry or moist
Texture (less than 2-mm fraction)--loam, silt loam
Clay content--21 to 27 percent
Channer content--10 to 30 percent
Reaction--pH 6.8 to 7.9
Thickness--10 to 20 cm
Bk1 horizon
Value--6 or 7 dry, 5 or 6 moist
Chroma--2 to 4 dry or moist
Texture (less than 2-mm fraction)--loam, sandy loam
Clay content--7 to 15 percent
Total rock fragment content--40 to 60 percent
Channer content--35 to 55 percent
Flagstone content--5 to 10 percent
Calcium carbonate equivalent--20 to 35 percent
Reaction--pH 7.9 to 8.4
Thickness--20 to 30 cm
2Bk2 horizon
Value--6 to 8 dry or moist
Chroma--2 to 4 dry or moist
Texture (less than 2-mm fraction)--loam, sandy loam
Clay content--5 to 10 percent
Total rock fragment content--65 to 85 percent
Channer content--5 to 10 percent
Flagstone content--60 to 80 percent
Calcium carbonate equivalent--20 to 35 percent
Reaction--pH 7.9 to 8.4
Thickness--15 to 25 cm
2Bk3 horizon
Value--6 to 8 dry or moist
Chroma--2 to 4 dry or moist
Total rock fragment content--90 to 100 percent
Channer content--15 to 20 percent
Flagstone content--75 to 85 percent
COMPETING SERIES: None
GEOGRAPHIC SETTING:
Elevation--1700 to 2100 m
Mean annual precipitation--225 to 575 mm
Mean annual air temperature--2.2 to 6.1 degrees C
Frost-free period--65 to 85 days
GEOGRAPHICALLY ASSOCIATED SOILS: None listed
DRAINAGE AND SATURATED HYDRAULIC CONDUCTIVITY:
Drainage class--well drained
Saturated hydraulic conductivity (Ksat)--5 to 100 um/sec in upper part, 600 to 700 um/sec in lower fragmental part
USE AND VEGETATION:
Major uses--rangeland, wildlife habitat
Potential natural vegetation--low sagebrush, bluebunch wheatgrass, Idaho fescue, Sandberg bluegrass, prairie Junegrass, phlox
DISTRIBUTION AND EXTENT: Small extent in southeastern Idaho; MLRA 12
SOIL SURVEY REGIONAL OFFICE (SSRO) RESPONSIBLE: Portland, Oregon
SERIES ESTABLISHED: Clark County, Idaho; 2018
REMARKS:
Diagnostic horizons and other features recognized in this pedon
Mollic epipedon--zone from the surface to a depth of 25 cm (A, Bt, and Btk horizons)
Argillic horizon--zone from 8 to 25 cm (Bt and Btk horizons)
Calcic horizon--zone from 23 to 91 cm (Bk1, 2Bk2, and 2Bk3 horizons)
Depth to lithic contact--91 cm
Particle-size control section--zone from 8 to 91 cm (Bt, Btk, and Bk horizons)
Taxonomic version--Twelfth Edition, 2014
National Cooperative Soil Survey
U.S.A.